Learning swift-ui

• Struct
• Views
• HStacks
• ZStacks
• ForEach
• Custom View

struct and classes

Both look pretty much the same having a similar syntax. Having both:

• stored vars
• computed vars
• constant let (value never changes)
• functions
• initializers (like constructores)

Differences:

Generics We use when we don't really care what a type is, meaning when our type agnostic about our data structure. I.e: if we have an array of different types.

functions as types You can declare a variable (or parameter to a func) to be of type function. The syntax includes the types of arguments and return value, you can do this anywhere any other type is allowed.

(Int, Int) -> Bool // takes two ints and returns a Bool

....
var operation: (Double) -> Double

Closures: it is common to pass funcs arround that we are very often "inlining" them, we call this inlined funcs a closure.